edu.unh.sdb.datasource

Class MultiBlockCacheDataSource

java.lang.Object

edu.unh.sdb.datasource.DataCollection

edu.unh.sdb.datasource.DataSource

edu.unh.sdb.datasource.CacheDataSource

edu.unh.sdb.datasource.BlockCacheDataSource

edu.unh.sdb.datasource.MultiBlockCacheDataSource

All Implemented Interfaces:

Indexable

public class MultiBlockCacheDataSource
extends BlockCacheDataSource

The MultiBlockCacheDataSource provides caching service using a MultiBlockCache.

Field Summary

Fields inherited from class edu.unh.sdb.datasource.DataSource

fdlDescriptor, isActivated, name, wsName

Fields inherited from class edu.unh.sdb.datasource.DataCollection

attributeOrder, axisOrdering, axisWeights, bounds, dataOrder, dimensionality, numAttributes, pointOrder, recordDesc

Constructor Summary

Constructors

Constructor and Description
MultiBlockCacheDataSource(java.lang.String name, DataSource ds, IndexSpaceID blockDimensions, IndexSpaceID cacheDimensions) Creates a MultiBlockCacheDataSource that caches the specified DataSource.
MultiBlockCacheDataSource(java.lang.String name, DataSource ds, ISBounds iterationSpace, IndexSpaceID blockDimensions, IndexSpaceID cacheDimensions) Creates a MultiBlockCacheDataSource that caches the specified DataSource.

Method Summary

Methods

Modifier and Type	Method and Description
void	activate() Calls activate() for the underlying datasource, and creates the actual cache, which allocates memory for the CacheBlocks.
void	datum(Datum datum, IndexSpaceID did) Load the data at the given index into the provided datum.
IndexSpaceID	getCacheArrayDimensions()
ISPartitioning	getPartitioning() Return a partitioning corresponding to the manner in which the iteration space is divided into cache block regions by the cache.
static void	main(java.lang.String[] args) For debugging.

Methods inherited from class edu.unh.sdb.datasource.BlockCacheDataSource

getCacheBlockBounds, getCacheBlockBounds, getCacheBlockBounds, getCacheBlockBoundsIterator, getCacheBlockBoundsIterator, getCacheBlockDimensions, getCacheMemoryUsage

Methods inherited from class edu.unh.sdb.datasource.CacheDataSource

datum, datum, deactivate, getIterationSpace, getSource, subblock, subblock, useBytesOnly

Methods inherited from class edu.unh.sdb.datasource.DataSource

checkActivated, clearCache, copyBestID, create, create, create, createRemote, createRemote, createRemoteClient, createRemoteClient, createRemoteDataSource, createRemoteDataSource, createRemoteDataSourceUDP, createRemoteUDP, createRemoteUDP, dumpData, equals, getFDLDescriptor, getMetadataCollection, getName, getStatistics, getValues, isActivated, setMetadataCollection, toString, toString

Methods inherited from class edu.unh.sdb.datasource.DataCollection

byteSize, computeOffset, computeOffset, copyBounds, createDataBlock, createDataBlock, createDataBlock, createDatum, createDatum, createDatum, createDatum, createDatum, createDatum, datum, datum, datum, datum, dim, getAttributeNames, getAxisOrdering, getAxisWeight, getAxisWeights, getBounds, getByte, getBytes, getBytes, getBytes, getBytes, getBytes, getBytes, getBytesByAttribute, getBytesByAttribute, getBytesByPoint, getBytesByPoint, getDataOrder, getDimensionsArray, getDouble, getDoubles, getDoubles, getDoubles, getDoubles, getDoubles, getDoubles, getDoublesByAttribute, getDoublesByAttribute, getDoublesByPoint, getDoublesByPoint, getFloat, getFloats, getFloats, getFloats, getFloats, getFloats, getFloats, getFloatsByAttribute, getFloatsByAttribute, getFloatsByPoint, getFloatsByPoint, getInt, getInts, getInts, getInts, getInts, getInts, getInts, getIntsByAttribute, getIntsByAttribute, getIntsByPoint, getIntsByPoint, getLowerBoundsArray, getNumAttributes, getRecordDescriptor, getShort, getShorts, getShorts, getShorts, getShorts, getShorts, getShorts, getShortsByAttribute, getShortsByAttribute, getShortsByPoint, getShortsByPoint, getStorageType, getUpperBoundsArray, getValues, getValuesByAttribute, getValuesByPoint, longVolume, setAxisOrdering, setBounds, setRecordDescriptor, size, subblock, subblock, subblock, subblock, subblock, subblock, subblock, subblock, subblock, subblock, volume

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

MultiBlockCacheDataSource

public MultiBlockCacheDataSource(java.lang.String name,
                         DataSource ds,
                         ISBounds iterationSpace,
                         IndexSpaceID blockDimensions,
                         IndexSpaceID cacheDimensions)

Creates a MultiBlockCacheDataSource that caches the specified DataSource. The blocks used have dimensions specified by the blockDimensions argument. The cacheDimensions argument specifies the dimensions of the array containing the blocks. Only the region specified by the iterationSpace parameter is cached when this constructor is used.

MultiBlockCacheDataSource

public MultiBlockCacheDataSource(java.lang.String name,
                         DataSource ds,
                         IndexSpaceID blockDimensions,
                         IndexSpaceID cacheDimensions)

Creates a MultiBlockCacheDataSource that caches the specified DataSource. The blocks used have dimensions specified by the blockDimensions argument. The cacheDimensions argument specifies the dimensions of the array containing the blocks. The entire datasource index space is cached when this constructor is used.

Method Detail

getPartitioning

public ISPartitioning getPartitioning()

Return a partitioning corresponding to the manner in which the iteration space is divided into cache block regions by the cache.

activate

public void activate()

Calls activate() for the underlying datasource, and creates the actual cache, which allocates memory for the CacheBlocks.

Overrides:

activate in class BlockCacheDataSource

datum

public void datum(Datum datum,
         IndexSpaceID did)

Load the data at the given index into the provided datum.

Specified by:

datum in interface Indexable

Overrides:

datum in class CacheDataSource

getCacheArrayDimensions

public IndexSpaceID getCacheArrayDimensions()

main

public static void main(java.lang.String[] args)

For debugging. Runs basic tests on the MultiBlockCacheDataSource class.